Valve for controlling a fluid flow

Abstract

A valve for controlling a fluid flow, in particular for crankcase venting of an internal combustion engine, including a base body, a valve body and a biasing means, the base body having a valve side and an opposite side situated opposite the valve side, a part of the valve body protruding through an opening situated in the base body, the biasing means, in particular a compression spring, being arranged between the opposite side of the base body and the valve body and supported against the opposite side of the base body.

1 . A valve for controlling a fluid flow comprising a base body, a valve body, and a spring, said base body comprising a valve side and an opposite side situated opposite said the valve side, wherein a part of the valve body protrudes through an opening in the base body, and the spring is disposed between the opposite side of the base body and the valve body and supported against said opposite side of the base body, and wherein the part of the valve body which protrudes through the opening in the base body is constructed as a guide dome which is guided in a valve body guide on the base body.  
     
     
         2 . A valve according to  claim 1 , wherein said spring comprises a compression spring.  
     
     
         3 . A valve according to  claim 1 , wherein another part of the valve body which protrudes through another opening in the base body is constructed as an abutment for the spring.  
     
     
         4 . A valve according to  claim 3 , wherein the another part of the valve body which protrudes through another opening in the base body is constructed as a snap hook.  
     
     
         5 . A valve according to  claim 1 , wherein operating characteristics of the valve, which are defined by the combination of the spring with the valve body and the base body, are adjustable in a controlled manner.  
     
     
         6 . A valve according to  claim 5 , wherein the valve characteristic is variable by an axial adjustment of the abutment.  
     
     
         7 . A valve according to  claim 5 , wherein the operating characteristics of the valve are variable by replacing the spring.  
     
     
         8 . A valve according to  claim 7 , wherein the spring is replaceable manually without the use of tools.  
     
     
         9 . A valve according to  claim 1 , further comprising a sealing element provided directly on the valve body.  
     
     
         10 . A valve according to  claim 9 , wherein said sealing element is made of an injection moldable material integrally molded on the valve body.  
     
     
         11 . A valve according to  claim 1 , further comprising a sealing element provided directly on said base body.  
     
     
         12 . A valve according to  claim 11 , wherein said sealing element is made of an injection moldable material integrally molded on the base body.  
     
     
         13 . A valve according to  claim 1 , wherein the spring is made of an injection moldable material integrally molded on the base body.  
     
     
         14 . A valve according to  claim 1 , further comprising a clamping device which acts upon the valve body in at least one end position thereof with a clamping force exerted in a direction transverse to a direction of movement of the valve body.  
     
     
         15 . A valve according to  claim 1 , wherein said valve is disposed in a filter housing on a crankcase gas vent line extending between an internal combustion engine crankcase and an air intake tract of the internal combustion engine.  
     
     
         16 . A filter device for purifying a fluid stream comprising a filter housing having an inlet, an outlet, a filter element in said housing sealingly separating the inlet from the outlet, a housing cover, and a pressure relief valve for releasing excess pressure from within said housing, wherein said valve is a valve according to  claim 1.